Best of the "Murphy's law of Combat"
Friendly fire isn't
Suppressive fire won't
The blast radius of a grenade is always one foot further than your jumping radius
If the enemy is in range, so are you
If your attack is going well, your heading into an ambush
When you have plenty of ammo, you never miss, when you are low on ammo, you can't hit the broad side of a barn
The only thing more accurate than incoming enemy fire is incoming friendly fire
Never share a fox hole with anyone braver than yourself
Never draw enemy fire, it annoys your friends
Don't choose a conspicuous hiding spot, it is conspicuous.
The list goes on.